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24 deviation from the housing requirement, the basis of that
requirement is upon the AMO having suitable housing at another location that meets the requirements of part 145. The AMO must
still meet the housing and all other applicable requirements of part 145. Housing need not be on the airport where the line
maintenance takes place, but the AMO’s OpSpecs must list the street address.
c The granting of line maintenance authorization is only to maintain the aircraft of Indonesian. air carriers certificated under part
121135 or a foreign air carrier or a foreign person operating an Indonesian registered aircraft in common carriage under part 129.
An AMO cannot receive line maintenance authorization to provide maintenance on foreign air carriers that do not have Indonesian
registered aircraft. The OpSpec cannot list foreign air carriers and persons operating under part 129 that do not have Indonesian
registered aircraft.
5 AMO must maintain the tools and equipment needed to perform line maintenance. AMO may lease seldom-used or unique tools as
specified in CASR Part 145.51b and not maintain them if the AMO has a signed contract from the owner of the tool or equipment. As with
all AMOs, the required tools and equipment must either be on the premises and in use during the performance of the work, or the AMO
must have a contract that stipulates that the recommended tools are available.
6 Authorizing an AMO to perform line maintenance will follow, as appropriate, the same certification procedures found in Chapter III and
Chapter IV of this SI. 7 AMO that may desire to perform line maintenance at more than one
location must apply for, and provide the airport and operator information for each. This is limited to AMO with authorization to
provide maintenance on the complete aircraft.
8 The AMO’s OpSpec will list locations where the AMO performs line maintenance.
9 OpSpec authorizes a part 145 AMO to perform line maintenance
functions that apply only to the certificate holders conducting operations under parts 121 and 135, and for foreign air carriers or
foreign persons operating an Indonesian registered aircraft in common carriage under part 129.
a The addition to the OpSpecs of authorization of line maintenance can only be for AMO that provide line maintenance for air carriers
as defined in the regulation. General aviation operators do not have authorization for line maintenance.
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25 b The authorization for providing line maintenance through the
issuance of OpSpec is not a rating. c The OpSpec authorization is a limitation to a rating, and as such,
the limitation section must clearly state the types of aircraft the AMO has authorization to maintain and the location of the line
station.
d The DAAO Inspector must review the scope of work the AMO will provide for each air carrier, which becomes the limitation added to
OpSpec AMOs cannot receive a blanket authorization. The DAAO Inspector must complete the review as required for each location
and determine if the AMO can complete the requested maintenance for the air carrier at each location.
e AMO not limited to line maintenance should not receive OpSpec for line maintenance at their home location or airport. However, if they
need to perform line maintenance away from the home location, then all of the provisions of the line maintenance apply, and they
receive OpSpec listing each location.
f The DAAO Inspector must complete the review as required for each location and determine if the AMO can complete the
requested maintenance for the air carrier at each location.
e. Other Issues.
1 An AMO only receives authorized line maintenance based upon a demonstrated ability to perform the scope of work for a specific air
carrier at a specified location. It cannot receive authorization for emergency maintenance and any work away from that location.
2 This does not prevent the appropriately rated main base from doing work away from station. However, any location listed on the OpSpec
cannot authorize work away from station. The OpSpec is an authorization for a specific maintenance function and air carrier at a
specified location.
3 Additionally, several AMO had multiple locations for line maintenance all under separate certificates. If an AMO requests to have multiple
locations, the OpSpec records the additional locations specific to the
air carrier and the scope of work for that air carrier. a Each location must receive an evaluation to determine if the AMO
meets all requirements from the scope of work for each air carrier and the parts, equipment, and personnel to support the requested
maintenance for each air carrier at that location.
b The DAAO Inspector for the parent AMO will assume the responsibility for all certification and surveillance of the additional
locations.
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26
NOTE: During surveillance activities, DAAO Inspector must ensure
that AMO performing line maintenance are using the correct data from the correct operator, are operating from a location authorized
in their OpSpecs, and are in compliance with part 145. The AMO Manual must reflect how it operates at each location and, if the
AMO has elected to use other rule provisions such as work away from the fixed location, that procedures in the manual detail these
operations
Table II-1 Airframe Ratings and Classifications Rating
Class Definitions and Notes
Airframe Class 1: Composite
construction of
small aircraft May
perform maintenance
and alterations of airframes and airframe
components in accordance with part 43 on any article for which it is rated
and within the limitations in its OpSpecs.
This rating also allows the removal and installation of powerplants, propellers,
radios, instruments, and passenger convenience
items, but
not the
performance of
maintenance to
internal sections of these components.
Class 2: Composite construction
of large aircraft
Class 3: All-metal construction
of small aircraft
Airframe: Fuselage, booms, nacelles, cowlings, fairings, airfoil surfaces
including rotors
but excluding
propellers and rotating airfoils of engines and landing gear of an
aircraft and its accessories and controls.
Large Aircraft: Gross takeoff weight of more than 12,500 lbs. Typically
considered transport-category
aircraft. Small Aircraft: Gross takeoff weight
of 12,500 pounds or less. Typically considered general aviation aircraft.
Class 4: All-metal construction
of large aircraft
NOTE:
An AMO may maintain and alter any airframe or part thereof for which it has a rating. However, it may not maintain any TC’d products engine or
propeller installed on the aircraft without the appropriate rating. Nor may it maintain or alter any part thereof unless it has evaluated its capability and
July 2013
27 assured it has the tool, equipment, data, and personnel to do so. Maintaining
powerplants, propellers, radios, and instruments requires additional ratings.
6. POWERPLANT RATINGS AND CLASSIFICATIONS a. Components and Articles. Components and articles included in the
powerplant rating are turbo-superchargers, magnetos, carburetors, appurtenances, and other articles necessary for the proper operation of the
powerplant. Although the regulations do not define “powerplant”, they do define “aircraft engine.” This rating does not include removal and
installation of the powerplant onto the aircraft. If a AMO wishes to maintain and also install the powerplant, it must obtain an appropriate limited
airframe rating. See Table II-2, Powerplant Class Ratings Under CASR Part 145.59
NOTE: The guidance on limited ratings provided in paragraph 5c on this chapter also applies to limited powerplant ratings.
b. Limited Powerplant Ratings. Limited powerplant ratings must identify
the powerplant manufacturer and the makemodel of the powerplants the AMO intends to maintain. This type of rating, unless it includes limitations,
allows complete repair or alteration of the powerplants listed.
1. Powerplant maintenance has also found numerous “niche” businesses that may include the performance of a specific maintenance function
on a wide variety of powerplants. In this case, the OpSpecs would identify the manufacturer, but the makemodel column could contain
“all models” instead of identifying each model.
The limitations column would identify any limitations to its maintenance capabilities, such as, “Limited to plasma spray operations on Pratt and
Whitney series turbine blades.” This rating allows the AMO to plasma spray all Pratt and Whitney turbine blades, regardless of the
powerplant model the blades were from.
The OpSpecs would also need to list additional manufacturers if the AMO has the technical data, tools, and equipment to perform this
maintenance function on those additional powerplants.
2. OpSpecs should identify the manufacturer and makemodel authorized. Use of the term “all” or series may be appropriate when
denoting the makemodel in certain rare occasions. However, the DAAO Inspector must use good judgment and carefully
consider potential unintended consequences. If the inspector is not careful, use of the word “all” or series could inadvertently authorize
work beyond the desired intent.
For example, use of the word “all” or series may be appropriate to authorize maintenance on certain Lycoming engines when used with a
